Regenerative reversing-furnace.



L. I.. Knox.

APPLICATION FILED MAY 12,1910..

5 SHEETS-SHEET l.

Patented Dec. 13,1910.`

WITNESSES w GMM am m n@ n uw 'L.L.KNOX.

REGEN ERATIVE RBVERSIN G FUBNAGE. APPLICATION FILED MAY l2. M10.l

Patented Dec. 13,1910.

5 SHEETS-SHEET 2.

wrmssss mvENTon wdmy I 6a/gw Wt mth L. L. KNOX. REGENERATIVE RBVEBSING FUBNACB.

APPLOATION FILED Ik! 11. 13.10

. Patented Dec. 13, 19-10.

5 SHEETS-SHEET 3.

wrrNEs'sEs -L. L. KNOX. RBGENERATIVE RBVBRSING PUBNAGB.

APPLICATION FILED HA'H, 1910.

Patented Dec. 148, 1910.

5 SHEETB-BHEET 4.

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L.L.KN0X. BEGBILRATIVEl REVERSING FURNCE.

APPLICATION FILED HAY l2, 1910.

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UNITED sTATEs PATENT oEEio-E.

`ILUCILHER. L. iiNoX, or A vnLoN, PENNSYLVANIA, AssIGNon To' KEYsToNE FURNACE ooNsTnUcTioN coiyirfiNY, or rrr'rsisune, PENNSYLVANIA, A CORPORATION -ol I PENNSYLVANIA..

-REGENERATVE REvERsiNG-FURNACE.

Specification of Letters Iatent.

Application -led May-12, 1910. Serial No. 56,854.

To all whom 'it may-concern.' l

Be it known that I, LUTHER L. KNOX, of

' Avalon, Allegheny county, Pennsylvania,

have invented a new and usefulllinpiovenient in Regenerative Reversing-Furnaces, of which the following is a full, clear, and exact-description, reference 'being had to the accompanying drawings, forming part of this specification, in Whicliv-mj Figure l'is'a vertical section of one end portion of an o'penliearth furnace Cnili'mdying my invention Fig. 2 is a side elevation Aoft-he saine; Fig. 3 is a section on the line IIIIII of Fig. 1; Figa is an end elevation; Fig. 5 is a top plan View, partly broken away of the port cooler; Fig. (i is a section on the line VI-'VI of Fig. l; Fig. 7 is a side View partly' broken away of the port cooler;

My invention has relationk to certain new and useful improvement-.s in furnaces of the regenerative reversing type, and has incre particular relation to ineans for protecting theports and uptakes of the furnace from the destructive action of the hotaii' and gases.

To this end' the invention consists in noi-'el means for water-cooling certain portions of the furnace, as hereinafter inore fully dclscribed. A

Referring to the accompanying drawings, the numeral 2 designates the body of the furnace, 3 are the two air uptakes, which at theirupper ends communicate with a port 1 4t leading intothe furnace chainbclgiand 5 is the gas uptake which is located centrally between the two air uptakes, and which coin- `Inunicates at its upper end witlr a port (3 The airv leading to theffurnace chamber. uptakes -3 are shown as inclined upwardly and rearwardly ,frein .the ,slag pockets 7, their kwalls 8 being constructed separately from the wall 9 of the gas uptakes 5.

The arch between 'thevair port L.tand the gas port 6 consists of an upper arched wall 10 'of masonry-,a .metallic coolerl 1.1, and a lowe'r refractory 'wall or lining'v12. The cooler llgjvhich maybe consti-noted .either as a casting or of Welded *sheets oriplates of sheet inet'al, has the inain portion desigi nated 11,- extending between'the archlO and the refractory. wall 12;, Ait alsowhas the holis a section on the line IVIII- VIII of Fig; 7.

vkpointrin the cooler is at its lower outer corner-'where it is provided with it clean-out connection la. lnasinucli as all dirt. and sedi-` inent will collect at the'lowestipoint., `this construction and arrangement 'f provides 4means whereby this port cooler may be readily and easily cleaned, and which is amatter of seine considerable practical iinportance. The outer portion 1 1b of the port cooler is preferably provided with a poke opening 11, which is norniallyclosed. by means o f a filling 15 of brick or other suitable material. v Y

- The in'ain. oi' top portion 11 of theport cooler provided With the skewfbacks- 11d which support the "refractory wall -12,-\vhicli foi-ins the roof of the gas port. Vitliin the inner end portion oftliercooler is a. sprayv pipe having a horizontal arni 16 which extends transversely through tlie portion llof the cooler and vertical legs 16a which extend downwardly Within each of the side legs 11@ thereof, each of these legs being provided 'with a plurality of spray or jet Apipes or nozzles '16. This spray pipe. vis supplied with Water `by means of a plurality of pipes 17 Whicli'have a coinbinedcapacity at least equal to that of the combined spray or jets 1G". The pipes 17 may also be, provided with the downwardly extending branches 16c which discharge at points adjacentto the bottoni walls of the side legs 11a. The wa- 4ter discharged b v'lthese jets strikes directly against the inner end walls of the cooler A which are inost` directly exposed to theheat of thexfurnace, andvwhich gives an effective cooling protection. The discharged water v as it becomes heated rises to the discharge 18 -at tlieupper centrahA and highest portion of the cooler. y protects notonlytlie bottoni wall ofthe air It will-be seen that this cooler port- 4, butA also the top, side and outer end wall of the gas port 6, which includes 1the upper portion of the gas uptake' 5f Should A Patented Dee-13, 1910.`

it become burned out, 'it together with its re- *fractory lining, may be removed from underneath thefarch l() and may be replaced.

The outer end wall ofthe gas port 4 is protectedby a cooling plate 19.*l Each of the u -takes 3 and 5 is also preferably protects by inclosing cooling'fplates, as will be v,best seen by reference to Fig. G. In this fig,-

gure 'designates hollow cooling plates,

f extend around three sides of the lower inclined port-ion of each of the air uptakes 3,

andfwhich are formed with the skew-backs V,Qlffwhicli carry the refractory archesQQ Awhich form onewall of each of these up,- itakes.- The fourth ,side of the inclined lportion of each uptake 3 is protected by a'sepa- 'irate cooling plate 23. The upper portion of each uptake 3 is protectedaat the sides and front by coolers Q0a and 20D. rThergas up- 'tvakeis protected 'by a cooling plate 2l extendingl around three-sides thereof and by fanother pla'te 25 at the-fourth side. 'It will be Sleen by reference to this figure that the (walls `ofthe air and gas uptakes are sepa- Vratedby al sufficient space to receivetliesc coolingplates, and that there is thus provided a double cooler between the adjacent walls of the air and gas uptakes.

The bottom wall of the archs 10 of the air portzl, at eachl side of tliegas portati ispro. tectedbv a cooling plate Q6. These coolingl platesc lie underneath the arcl'l() at each sidel of thegas port, andy are supported byv the vertical coolers 27 andQS'. The coolers 27 protect the front wall of t-he air uptakesfurnace..as clearly seen in Fig.1. 45

connections for the various cooling-plates.

`The/se circulating connections may be ar-r ranged. in various ways, but 'are preferably so'arranged in all cases that'the'incoming water will enter atthe lowest point. of the Acooling plate, while the outlet connection for the heated. water is at the highest pointof the plate. l

1 It will be vseen that'my invention provides ,Ine-ans of'simple and effect-ive character by -nieans of which the furnace 'portsand gas 35nd air uptakes of a furnace of theregenerative reversing type may be effectually protected from the cuttingaction of the hot air and gases.- Y n While I have shown my invention applied to one end only of a furnace, it will be un'- derstood that the ports and uptakes'at both )ends are preferably of similar construction 55' an'd arrangement.

31 whereverl seen designates circulating What I claim is :--v

'l.` In a regenerative'reversing furnace, a removable port cooler comprising an upper portion lying Within the arch which separatesthe gas and air ports, side portions which inclose the gas port, andan outer end portion which ,protects the outer end wall of the gas port and gas uptake, said cooler being tapered and having its lower portion at its outer lower corner, and said outer lower corner being provided with a clean-out connection;'substant1ally as described.

2. In a furnace of the regenerative revers-v ing type, a port cooler comprising an upper member arrange'd to extend within the arch separating the 'gas and air ports, said portions inclosing the sides of the gas port and' `ofthe upper portion of the gas uptake, and

an end portion forming a cooler for the end wall of the upper portion of the uptake, said cooler having skew-backs which support a refractory lining Afor the upper -wall of the gas port, and the cooler being of greater vertical'deptli at its outer end than at its inner end and having its lowest point at its lower outer corner; substantially as described.

3. In a yfurnace cooling means, a9 port cooler having a portion to extend within'the arch between the gas and air ports, and also having portions arranged to extend downwardly at the sides of the gas port, a spray pipe located at the inner portion -thereof and arranged to discharge against its inner end wall, and .a plurality of supply pipes con'- nected to said'spray" pipe and extending to the outer end of the cooler; substantially as described.

4.. In'a regenerative reversing furnace, a',

port cooler having a portion to extend Withinthe archbetween the gas and air ports, and side portions which inelose the gas port, of a spray pipe extending vwithin said cooler near its inner end and arranged to discharge against the inner end wall thereof, said vspray pipe extending. downwardly vwithin the side portions of the cooler, and connections for supplying water to the spray pipe; substantiallyas described.

5. In a regenerative reversing furnace, gas and air uptakes4 having separate refractory walls, and hollow cooling plates surrounding each of said uptakes on all sides thereof, the

gas uptake extending centrally between the air uptakes, andthe refractory walls of the gas Aand air uptakes being protected by the air uptakes; substantially ras described.

- 6.! In a regenerative reversing furnace, an

air uptake leading in an inclined direction from the slag pot. to the air port of the'furnace, and having one of its walls arched,V and .a cooling plate having skew-backs which support the arched wall; substantially as described. p 7. In a regenerative reversing furnace,4 an

iio

4 `adjacent cooling plates of both the gas and air uptake having an arched Wall and a cooling plate liavinor skew-backs support-ing -the arched wall, `said cooling member ex. tending aroundl three sides of th-e uptake, and another cooling plate protecting the fourth side of the uptake; substantially as described.

9. A 'regenerative reversing furnace hav-V 1`5 ing gas and air ports and a Wall or arch separating said ports, said Wall or arch having ay cooling member therein, and other cooling members at the sides of the firsty. named cooling member. and protecting the -bot`toiii ivall ofthe air port; substantially as described. n

10.5111 a regenerative reversing furnace having a gas uptake and a port 'connecting the uptake to the furnace chamber, `a cool ing jacket for the uptake, and a cooling member extending underneath the gas port Aand supported by t-lie said jacket; substan t'filly as described. 1. A regeneratiif'e reversing. -furnacerliava gas uptake, and a gas port leading iii C' l therefrom and provided with a refractory.

ivall, and a cooling'plate extending under-A i neath said wall, said plate being supported at (one eiid on the gas uptake, and the furnac'ehaving its frame provided with a Vsupport for the opposite end of the: plate; sub# stantially as described. y

1'2. I n a. regenerative reversing furnace,

' scribed. y

air andA gas uptakes having .their outer walls 0r bulk head provided ivitlra water 'jacket fitting against the refractory v.materialthere;

' of,'said jacket being formed in separate ,sec-- tions, .said sections covering substantially the entire outer surface of the'front walls ofthe gas and air uptakes, and the joints between the sections being so placed that the sections covering any uptake can-be separately removed; substantially as de- 13. A regenerative reversing furnace hav ing inclined air uptakes and a central vertical' gasyupt'a'ke, an air port connecting the upper ends of the air uptakes with the fur;

'nace chamber, and a gas port coiinectiiigtlie upper end of the gas uptake with t-lie furiiacecliamber, a refractory Wall separating said ports, a cooling elementin. said Wall,

cooling elements at the sides of the gas port.

a coolingeleinent underneath the bottom of the gas port, and a cooling eleiiieiitfiinderiieatli the air port at each side of the gas port; substantially as described.

14:. In a regenerative' reversing furnace. a removable port cooler comprising` an upper portion lying ivithiii the aicli which sepaA rates the gas and air ports, side portions which inclose the gas port, and an outer end Iportion which protectsitlie outer end Wall of the gas portan'd gas uptake; substantially as described.

Iii testimony whereof, I have hereunto set` my liaiid. 1

' LUTHER L. KNOX.

"Witnessesz' H. M. CoiiwiN,

Guo. H. PRMELEE. 

